<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
-----hello jasonLin!------
<form id="form" name="form" action="/test">
    <input type="hidden" id="flag" name="flag" value="1">
    <button type="submit">submit</button>
</form>
</body>
</html>